What this MCCB delivers on the line
The Siemens SENTRON 3VA2010-6HL32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current, with an ETU320 electronic trip unit designed for line protection. Its 242 kA breaking capacity at 240 V AC means it can safely interrupt very high fault currents without upstream damage — a key spec for high-available-fault-current panels where standard breakers would cascade-fail. At 415 V and 440 V it still holds 187 kA, dropping to 121 kA at 500 V and 3 kA at 690 V, so the SCCR headroom is substantial for most industrial distribution. The insulation voltage is rated 800 V, and the unit carries IP40 protection on the front — suitable for enclosed panel mounting where the front face is behind a door. Power loss is 13.5 W maximum, which matters for thermal budgeting inside a sealed enclosure.
Panel fit and footprint
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without re-drilling. The 86 mm depth (3.39 in) is shallow enough for shallow backpanels or gland-plate clearance.
Thermal derating and ambient range
The breaker is rated 100 A continuously across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Operating ambient spans -25 °C to 70 °C, storage from -40 °C to 80 °C. That covers most indoor panel environments, including non-conditioned electrical rooms.